GOST 10303-80 FLAT-HEAD RIVETS, PRODUCT GRADES B AND C

FLAT-HEAD RIVETS, PRODUCT GRADES B AND C. GOST 10303-80.

Flat-Head Rivets, Product Grades B and C. Specifications	GOST 10303-80 (ST SEV 1022-78) Supersedes GOST 10303-68

The standard was in effect from 01.01.81; its validity was extended to 01.01.91 (Amendment No. 1).

This standard applies to flat-head rivets for general mechanical engineering use with shank diameters from 2 to 36 mm, product grades B and C.

Flat-head rivets must satisfy all requirements of GOST 10304-80 and the requirements set out in the relevant sections of this standard.

1. Dimensions

Rivet dimensions must conform to those shown in the drawing and in Tables 1 and 2 (Amendment No. 1).

Table 1, mm

Shank diameter d	2	2.5	3	4	5	6	8	10	12	16	20	24	30	36
Head diameter D	3.8	4.8	5.5	7.5	9.5	11	14	16	20	25	32	40	50	60
Head height H	1	1.2	1.6	2	2.5	3	4	5	6	8	10	12	15	18
Radius under head r, max	0.2			0.4		0.5		0.6	0.8	1.0		1.2		1.6
Head fillet radius r₁, max	0.5	0.7		1.0	1.3		2.0		2.6	3.0	4.0	5.3	6.6	8.0
Distance from head base to diameter measurement point l	3				4			6			8		10

Table 2, mm

Shank diameter d	Length L
2.0	4-10
2.5	5-14
3.0	5-18
4.0	6-32
5.0	8-60
6.0	10-60
8.0	14-60
10	16-85
12	18-90
16	24-110
20	32-150
24	50-180
30	60-180
36	60-180

(Amendment No. 1).

Rivet length is selected from the series: 4, 5, 6, 7, 8, 9, 10, 12, 14, 16, 18, 20, 22, 24, 26, 28, 30, 32, 34, 36, 38, 40, 42, 45, 48, 50, 52, 55, 58, 60, 65, 70, 75, 80, 85, 90, 95, 100, 110, 120, 130, 140, 150, 160, 170, 180 mm.

Example designation for a flat-head rivet, product grade B, diameter d = 8 mm, length L = 20 mm, material group 00, plain:

Rivet 8 × 20.00 GOST 10303-80

(Amendment No. 1).

The theoretical mass of rivets is given in the reference appendix.

2. Technical requirements

Permissible deviation of head height H = 1 mm — ± 0.28 mm.

Appendix (informative). Mass of steel rivets

Length L, mm	Theoretical weight of 1000 rivets, kg, at nominal shank diameter, d, mm
	2	2.5	3	4	5	6	8	10	12	16	20	24	30	36
4	0.175
5	0.200	0.339	0.527
6	0.225	0.378	0.583	1.188
7	0.249	0.416	0.638	1.287
8	0.274	0.455	0.694	1.385	2.431
9	0.299	0.494	0.749	1.484	2.586
10	0.323	0.532	0.805	1.582	2.740	4.135
12		0.609	0.916	1.780	3.048	4.578
14		0.686	1.027	1.977	3.356	5.022	9.63
16			1.138	2.174	3.665	5.466	10.42	16.47
18			1.248	2.372	3.973	5.910	11.21	17.71	28.45
20				2.569	4.281	6.354	11.99	18.94	30.23
22				2.766	4.589	6.798	12.78	20.17	32.00
24				2.964	4.898	7.242	13.57	21.40	33.78	63.55
26				3.161	5.206	7.686	14.36	22.64	35.55	66.71
28				3.358	5.514	8.13	15.15	23.87	37.33	69.87
30				3.555	5.822	8.57	15.94	25.10	39.10	73.02
32				3.753	6.131	9.02	16.73	26.34	40.88	76.18	131.7
34					6.439	9.46	17.52	27.57	42.66	79.34	136.7
36					6.747	9.90	18.31	27.80	44.30	82.49	141.6
38					7.053	10.35	19.10	30.04	46.21	85.65	146.5
40					7.364	10.79	19.89	31.27	47.98	88.81	151.5
42					7.672	11.24	20.68	32.50	49.76	91.96	156.4
45					8.134	11.90	21.86	34.35	52.42	96.70	163.8
48					8.597	12.57	23.04	36.20	55.08	101.40	171.2
50					8.905	13.01	23.83	37.43	56.86	104.60	176.1	277.3
52					9.213	13.46	24.62	38.67	58.64	107.70	181.1	284.4
55					9.676	14.12	25.80	40.52	61.30	112.50	188.5	295.0
58					10.140	14.79	26.99	42.37	63.95	117.20	195.9	305.7
60					10.450	15.23	27.78	43.60	65.74	120.40	200.8	312.8	527.7	815.9
65								46.68	70.18	128.30	213.1	330.5	555.4	855.8
70								49.77	74.62	136.20	225.4	348.3	583.1	895.8
75								52.85	79.06	144.00	237.8	366.0	610.9	935.7
80								55.93	83.49	151.94	250.1	383.8	638.7	975.7
85								59.01	87.93	159.83	262.4	401.6	666.4	1015.6
90									92.37	167.72	274.7	419.3	694.1	1055.6
95										175.62	287.1	437.1	721.9	1095.5
100										183.53	299.4	454.8	749.6	1135.5
110										199.29	324.1	490.3	805.1	1215.4
120											348.8	525.9	860.6	1295.3
130											373.4	561.4	916.1	1375.2
140											398.1	596.9	971.6	1455.1
150											422.7	632.4	1027.1	1534.9
160												667.9	1082.6	1614.9
170												703.4	1138.1	1694.8
180												738.9	1193.5	1774.7

(Amendment No. 1).

Note. To determine the mass of rivets made from other materials, the mass values given in the table are multiplied by the following coefficients: 0.356 for aluminium alloy; 1.080 for brass; 1.134 for copper.